Look of Storyline when editing

Hi

I am very new to storyline, and find that when I start a new project, the screen that I have to work in has a white square which is hard up against the left edge, and a shaded square (grey) that is centred in the middle of the work area.

When I bring in objects and align them to the white square, they do not all show in the preview.  If I align the objects to where the grey shaded square is, they show properly in preview.  This makes it difficult for me as nothing is lining up.  Is there something I can fix in settings perhaps to rectify this problem?

Thanks in advance!